It's exactly doom and gloom it's not a win win situation even if you use a little of that thing called brain.
You would know,that Nintendo would Sink shit ton of there resources too keep there business alive they don't have other Sectors like Sony with their camera division there Movie division and god knows what else and Microsoft with Windows,Surface pro,Cloud or whatever else etc etc.
That would mean shit ton of jobs would be lost because of Restructuring their studios to comodate for other consoles more resources would have to be put to develop games for PS,Xbox consoles and PC a lot more then their own home consoles.
So you are the one addressing doom and gloom? Then follow your own advice and stop it.
Yiu ask people to stop doing something they are not doing while being the one doing it, maybe you should use a bit more of that thing called brain.
Yes i am saying when posts like this and comments come,that is doom and gloom in my book,it's not a Win Win for them to got Third party like i said in my coment shit ton of stuff isn't accounted in your post.
Sony has more chance to go third Party then Nintendo and i Love Sony more then all other companies combined.